Gun-carriage traverse-indicator.



Patented Mar'. I2,V`I90: I.

A. n. Emsnv. Gun CARRIAGE: mAvEnsE mnlcnoa. y

(Application lod Feb.. 1, i901.)

3 lSheets--Shmat It un mw No. 669,898. Patented Mar. l2, l90l.

- A. H. EMERY. v

GUNl CARRIAGE. TRAVERSE INDICATOR.

(Application med Feb. l., 1901.)

thu Model.) 3 Sheets-Sheet 2.

un. 669,898. Patema am. s2, mi. A. H. wmv. l GRBl-AGE TRAVEBSE mDlCTo.

(Applierifmrmd Fab. 1', 1001.) (No IlodelJ lfefuNicARiiiAeE;TRAVERS El INDICATOR.

forming parrot Lei-.ters Patent Noxeeasee. dma" March 1 2, 1901.l fbghl rrlitioleloveiber 1.1990. s q'iia'i Nofaalsa. Divided mi this tppiimioii fue@ retiuary 1,1901. serai To' all 'whom zZt mag/concern;

"Beit known that I, ALBERT H. EMERY, a

` vftzen ofthe United States; residing` at Stamersej-'Indiatora, of which the followingis a speccation. This is va'divsioniofmy application filed November 1, 1900,' Serial No. 35,133; f'lhe subject of this'inventionis an indicator by which'theangplar rotationof a carriage on which'itis mounted 'or to which it may be :connected is shown.

This-indicator is intended'for use more es'- peci'ally" with the lmarriages of large' coastfdefense guns' and may be mounted on a xe'd or permanentseat andso connectedwith the car.

(No model.)

.-Iprefer this indicator to be rotary and to have its angular lmovements'in exact harmony withv the carriage and will illustrate my invention in exact, harmony with theangular motion of the"carriage: 1 This invention is illustrated in thevthree sheets of drawings formingpart of this speci-` 6o .iicatiom and in which- Figurel represents a front elevation of the indicator. Fig. 2 isa vertical section'of the same and detail of' a piece on which it `is mountedand one i the gears by which it is 65 connected to the traverse-wheel. Fig. 3 is an enlarged sectional d"etailof the' main axle of. .the indicator and theparts carried thereby.

riage 'as' to lshow `the angularrotation' or traverse of lthe same, or'it may be'mounted dire'etl y on some part of the'carriage andjtnrn with it Fig. 4 is a detail ofthe clntchf(shown in section in Fig. 3) used to adjust 4one of the point- 7e ers to the zero position. Fig. 5 is aeectional f and ibe so arranged as Io` show the angular movement thereof.

The indicator'maybe connected directly withv a'wheel which is operated to tra-verse the carriage and rotatein harmony therewith` orit may be connectedv with any wheel whichv rotates in harmony with' "the angular movement of the carriage whenit is' traversed,

suchwheel, if necessary,"being added especiali;T for this purpose. If connected directly with'thetraversefwheel-matie, a wheel that is driven directly to cause the rotation ofthe i "carriage-itjwill be desirable to have this "wheel so constructed and operated that'it will not slip when driving the carriage. This may be'V accomplished by the use of suitable gears l gearing the wheel to thebed or other-stationg-ary'part of the carriage, or it may bev done by' giving sufficient pressure'between the bear-E L ing-face ofthe traverse-wheeland the bed tov prevent slipping when this wh'eel is turned to i rotatethe carriage.

VV`bed `or some other'fixed partof the carriage If thisfis. not done, it. would be'w'ell'to'connect the traverse-indicator when. mounted on ythe carriage with the V*byialn independent wheel "connected with the bed 'and traverse-indicator in such a way that riage, the bed lon which it is traversed,the.l

' to prevent slipping.

itbeingehowm in dotted section...

detail showing small portions ot the .gun-car- Shaft of the trayerse-Wheehthe trayerse-wheel aad. its gear, wghel.' with he laad-beam and .75 Y. its contained bearing,.an`d the tra"verse-i ndi catoizmounted thereon. Fig. 6Y is a frontv elevationofv these parts, together with thepirn ions used te drive .the gear of thetraveirsel Wheel, showin-g also the method of conneet- `8o ing the traverse-wheel to the `indicaior and -theadjoining load-springs arranged inY connection with theloadjbeams toadjust themessure between thetraveirse-wheel and thehed.

Fig. Z isa plan showing f .a portion'of the bed` on whichfthe traversevwheelreste, and the traverse7wheel'with the mechanigsm fer driving it, the traverse-indicator beingremoved andthegearwhich drives' In Figs. 1j and 2,'1 represente the maincaee` of theindicator'; 2,.the screws bywhic'h itis conne ed tothe load-bearnf, (better shownin Fig 2;) 4, a metalriiigsecured by screws 5 'to the easel; 6, another metal to the ringfft byscrews 7. i 8 Ais al glaseplate held .between the rings 4t and `by an' elastic packing 9.

ring secured 10 and 11 are respectively the'lfront andf Ithecarriage cannot be traversed'without mov rear Aframes which support the'internal mechroo 5o ing'theindic'ator'in-exactharmony therewith.

anisin of the indicator. To the supporting- 12 by the..

frame 1() is secured the casing-ring screws l i 14 is a ring secu-red by screws 15 to fra-me This ring has a dial graduated in .dgrggees from 6 tov.\i.," (See Fig. l.) n inner ring 16 secureil by screws 17 to support l0 and by screws 15 to ring 14, ring` 16 being graduated into equal parts numbered from d to 60 to indicate minutes, each min-- nte in turn being` divided into four equal parts to show fractions thereof.

Frames 10 and 11 are connected at the top by a rectangular plate 18, to` which they are fastened by screws 19, and a similar plate 20, also secured by screws 19, connects them at apoint lowerdown, as'shown iu Figs. 1 and 2. 21 is a shaft which carries a pinion 22 and may be driven by a crank placed on its outer end. This shaft restsrin a support 23, that is screwed into the front side of the load-beam 3 and has a bearing 23a resting in bushing 24,which is fixed in its seat by screw-cap 24a.

A washer 25 and cap-nut 26, screwed on the inner end of shaft 21, prevents its longitudinal movement. A.l similar shaft 2l and'pinion 22 are mounted in the load-beam 3 at its opposite end, as shown in Fig. 6. This shaft carries a gear 27, operated by pinion 28, by which it may be driven with greater force.

When the carriage is to be traversed slowly by one man, a crank is placed on shaft 29, Figs. 6 and 7, driving the pinion 30 to operate the gear 31. (Shown vin section in Fig. 2.) Gear 31 is keyed to'shaft 21 and turns with the pinion 22,Which drives the traversegear 32 (see Figs. 6 and 7) with much more force than when the crank is placed on shaft 21 and at the same tinie gives much slow-er steadier motion to bring the carriage yto the exact. position desired and to be determined by the pointer on, the traverse-indicator. Gear 31 meshes With and drives gear 33, Figs. 1 and 2, secured on -shaft' 34 by screws 35. Gear 33 meshes with and drives gear 36,which is secured by screws 37 to gear 38,which has a shaft 38 passing through and supported in frame 10. Gear 38d meshes with and drives gear 40, secured by screw 41 to the hub of pinion V42, which meshes with and drives gear 43, secured by screw 45 on the hub of a pinion 44. Pinion 42 rests on axle 46, which rests in frames 10 and 11. rests on shaft 39 and meshes with gear 50, secured by screws 51 to the hub of pinion 52, which turns loosely on shaft 46 and turns gear 53 on its fixedL bearing 54, which is se- Pinion 44' a clutch-hub 60, secured to* shaft 39 by the indicator-needle or pointer 1641.A nThe hub of compress spiral springs 63 around headed guiding-stems '64, through which they press l'the 'bearing-pieces 65(1nade of cork or leather or other suitable material) evenly against the shaft) with snlficientforce tocause it to turn with the gear 53.

66 is a small pin in the endfof shaft 39,with a head 66a, against which the. spiral spring 67 presses with sufficient force to keep the head 66a resting against its seat in bearing 54.

rlhe relations ofthe circumference of the traverse-wheel to that of its .path on the'bed, on which it travels, and the gearing between the traverse-wheel and the indicator and the gearing in the indicator are such that the pointer 6l revolves once per revolutionof the carriage, having the saine angular-rotation' as the carriage at` all points, so that the grad uation pointed out by this needle shows the exact revolution of the carriage in degrees. The relations ofthe gears in the indicator itself are such that the needle 57 inakesone complete revolution `tor each degree passed over by the needle l61 'lhese'two needles .thus show theexact position of the carriage in' degrees, minutes, and fractions ofininutes.

y The carriage will have soule fixed zero-- point at which both needles are set exactly at zero. For; this-purpose hubsy v56 and 60 have their adjoining facesl finished to form an interlocking clutch, (see Figs. 3 and 4,)

by which hub 60 can be made to'turu 56 vto set needle 5.7 lat zero. Through fthe glass plate 8 passes a flanged bushingS, with a nut 69, by which it is secured, and between the bushing and plate and the nut and plat-ev are packings 70 and in the nut 69 is a packing 71. These packings preventfwate'r from entering the indicator through or around the p bushing 68. Y

72 is a shaft set in bushing 68, on the outer` end of which is a nut 73, securedby screw 74, and on its inner end are small clutch-teeth which match recesses in the adjoining face ofthe hub 60.

needle 61 can quickly be turned to zero, nut` 73 being then pulled back to throw the clutch By pressing firmly againstv -1x5 the nut 73 the clutch formedy on' the adjoin-` ing faces of 72 and 60 is brought into play,`

between 72 and 69 out of"operation,thuslef ing both needles set at zero, with the ,cariaigre--z at its loading or starting point, and the nee-A dles will then turn in harmony with thecarriage and show its true angular position'atq any point.

Fig. 5 shows a portion of the bed 75, with;

'erse-wheel 76 runs.

its conical track 75, on-which the coned trav- 'Ihis wheel is keyed to shaft 77, which may have an inner spherical bearing to take up the thrust caused. by the coned faces ou the bed and traverse-wheel. This bearing is not shown. The carriage turns around an axis in the center of the bed 75. Shaft 77 hasatightly-iitting roller-bearing in the load beam 3. Rotation of the traverse-wheel causes the load-beam to move, which in turn moves the carriage by reason of the two vertical dowelpins 78, screwed through lugs in the carriage and fitted-to openings in the load-beam, thus causing the Whole carriage to rotate.

Two rods 79 and four rods 80 are secured to the'carriage-body 81 at their lower ends and have at their upper ends heads, which rest on washers 82 and compress springs 83 and 84 against collars 3 5 and 86, secured to the bottom of the load-beam. Through these collars the pressure on the springs is put on the loadbeam, by which it -is transmitted to shaft 77, and thus mainly to the traverse-Wheel, causing it to bear on the bed with suiicient pressure to prevent slipping when it is rotated, as should slipping occur the traverse-V indicator will not show the true angular posi-' tion of the carriage. In any style of carriage where these provisions against slipping are insuicient a separate wheel may be provided to roll on the vbed or some other stationary part of the carriage and then have the indicater mechanism geared` to lit instead of to the traverse wheel or mechanism.

Shaft 77 is fixed against longitudinal mo.- tion by the spherical bearing' at its inner end. It carries a ring 87 against a shoulder near its outer end. Between this ring and the bottom` ofthe recess inthe hub of the wheel 76 may be placed thin rings or plates to carefully adjust the distance of the traverse-wheel from the center of the carriage, so that one revolution of the carriage will give exactly one revolntion of the indicator-needle 6l.

Having thus described my invention, what I claim, and desire to secure .by Letters Patent, is-

1. In combination with a gun-carriage rotating about a vertical axis,a traverse-in-A rpointer driven by said mechanism with the exact angular movement of the carriage, and another pointer having a greater angular movement than that of the carriage.

2. In combination with a gun-'carriage rotating about a vertical axis, a traverse-indicator for said carriagereceiving motion from l and driven by the angular movement of the gun-carriage, and comprising two 4pointers with corresponding graduated arcs one of which pointers shows on its graduated are the exact angular movement of the carriage, while the other pointer moves through a complete revolution for each angular division shows the fractional portions ofthe division being passed over by the said first pointer.

'3. In combination with a gun-carriage rotating about a vertical axis, a traverse-indicator for said carriage comprising a shaft 39, sleeve 38 around said shaft, pointer-hubs and 56 ou said shaft and sleeve, pointers 6l and' 57 on said hubs and suitable mechanism driven by the angular movement of the earriage'transmitting to the shaft 39 the ex-l act angular movement of the carriageand to the sleeve 38, a greater angular movement.

4. In combination with a gun-carriage rotating about avertical axis, a traverse-indicator for said carriage comprising a shaft 39, sleeve 38 around said shaft, pointer-hubs 60 and 56 ou saidshaiit' and sleeve, pointers 61 and 57, suitable mechanism driven by the angular movement of the carriage transmitting to the shaft 39 the exact angular movement of the carriage, and to the sleeve 38 a greater'angular movement, and suitably-interposed frictional driving connections to allow the pointers to be set at any desired reading.

ALBERT H. EMERY. Witnesses:

JN0. R. ADAMS, HERVEY S. KNIGHT.

vtraversed by the first-named pointer, and 

